An interesting question is what, for some particular amount of money, one could maximally achieve and how. Some people argue that governments of all kinds are becoming less influential in comparison with individuals and private organizations. If so, perhaps any official adoption of Esperanto by the U.N. that one could buy for $X billion would have a smaller impact on the ultimate fate of Esperanto than the amount of private adoption that one could buy with the same amount of money. To me the most interesting aspect of this question is that it is fundamentally important in designing the strategies of the world's Esperanto promotion organizations, and yet as far as I know none of them conducts or sponsors any studies of this question.